Even a heart can beat after it’s been removed from the body. Yes body/musculature spasms are very real, although rare. Most of the time is gas made from cell breakdown flowing through the body. Which can be so strong bodies can even sit up. I know the heart beating video is here on the site. I am assuming you work on a transport team and had a fresh one. I am a Coroners assistant. I get them in all flavors and colors

I saw my late brother’s wedding ring finger twitch. This was a couple of hours after his death. I’m not sure if post mortem movement is that rare. Maybe just that most people ain’t looking too closely.

Lost him a little less than a year ago. It was a very nasty, highly aggressive cancer. Totally healthy all his life. He was a doctor. He got five weeks from the diagnosis. Inoperable. Nothing at all could be done. I spent all my life fishing, hiking and driving off on adventures with him.
I really miss the cunt.

Yes it is an orchid. I have flowers everywhere. Death Rattle is the brain trying to tell the body to breathe (brain stem wasn’t completely disconnected, just fatally wounded). But the signals from the brain coming out are strong and overwhelming signals it the body. The body is completely brain dead, it’s all involentary muscle moment. I have heard of 15 to 30 minutes or so after a fatal injury, but that is extreme and the body had no medical intervention.